Question 1117051
A cannon ball is thrown into the air from a height ,(h),,of 12 m. The height of the ball above ground t seconds after being shot is approximated by h(t) = -5t squared +15 t +12. Determine when the ball is 22 m above ground
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h(t) = -5t^2 + 15t + 12 = 22
It's a quadratic.
Solve for t